According to several sources in Lebanon, the Syrian security forces on Monday closed all the offices of Palestinian Hamas movement. The move comes after the commitment of nearly 2,500 Palestinian Hamas fighters to join to the ranks of the revolution against Bashar al-Assad.

It is reported that even members of Ahmed Jibril's PFLP-GC, an ally of the regime, rebelled against their leadership and refuse to fight with the forces of Assad. It should be mentioned that Hamas leader Khaled Meshaal has left Damascus, a move which confirmed the "divorce" between Assad and the Palestinian movement.

Meanwhile, the main opposition factions met in Doha Monday opening negotiations to establish a united front that would allow them, they hope, to get support from the international community in the fight against Bashar al-Assad.

The meeting scheduled until Thursday in Qatar aims to make a fusion between opposition groups based abroad and rebels fighting on the ground in Syria.

But rivalries within the Syrian National Council (SNC) raise the fears for a failure of this initiative.

Representatives are to discuss the proposal of Riad Seif, a leading member of the opposition, to form a new civil body which will then appoint an interim government and coordinate with the armed rebellion.

The SNC leaders, however, fear seeing their influence diluted in this organization. NSC claims to have conducted internal changes including within its political and military systems, but opponents argue that little has actually changed.